Electronic and Structural Properties of Thin Iron Oxide Films on CeO₂.

ABSTRACT: Modification of CeO₂ (ceria) with 3d transition metals, particularly iron, has been proven to significantly enhance its catalytic efficiency in oxidation or combustion reactions. Although this phenomenon is widely reported, the nature of the iron-ceria interaction responsible for this improvement remains debated. To address this issue, we prepared well-defined model FeO_x/CeO₂(111) catalytic systems and studied their structure and interfacial electronic properties using photoelectron spectroscopy, scanning tunneling microscopy, and low-energy electron diffraction, coupled with density functional theory (DFT) calculations. Our results show that under ultrahigh vacuum conditions, Fe deposition leads to the formation of small FeO_x clust

SUBMITTER: Piliai L 

PROVIDER: S-EPMC11378155 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature